# nervous system

> English word · Noun

## Definitions
1. An organ system whose principal constituent is nervous tissue that coordinates the activities of muscles, monitors organs, constructs and processes data received from the senses, and initiates actions.

## Etymology
1703, nervous + system.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/nervous-system